Expanding the list of drugs that interact with grapefruit juice
Dr. David Bailey from the University of Western Ontario in London, Canada, reported the “grapefruit effect” more than 15 years...
Potential for berberine to cause drug interactions
Berberine is used to treat gastrointestinal infections, diabetes, high blood pressure, and cholesterol. Many studies report interactions between berberine-containing products...
Final word on the statin-grapefruit juice interaction?
Researchers at Tufts University School of Medicine and Tufts Medical Center, in Boston, are the first to evaluate changes in...
Risk of drug interactions with dietary supplements
Researchers in the US reviewed the incidence and severity of potential interactions between prescription medicine and dietary supplements.
Grapefruit interaction with tolvaptan
Tolvaptan (Samsca) is used to treat hyponatremia — too little sodium in the blood. Patients with heart failure, liver problems...
Marijuana interaction with warfarin reported
Researchers from the Cheyenne Veterans Affairs Medical Center, in Wyoming report that when taken together, 1 patient experienced bleeding from...
Drug interactions with St John’s wort
It’s a long list compiled by researchers at RMIT University in Victoria, Australia.
Use of herbal supplements by people taking blood thinners
During the American Heart Association meeting, Dr. Jennifer Strohecker, at the Intermountain Medical Center, in Salt Lake City, Utah, reported...
Does Echinacea interact with HIV drugs?
Not much, according to researchers in Spain.
The final word on the warfarin-cranberry interaction?
“The warning that there is a potential to enhance the effect of warfarin… with cranberry juice intake is mostly based...
Lowering drug blood levels with grapefruit juice: When’s it significant?
Ask about the grapefruit/drug interaction and most people think of the increased blood levels of statins when grapefruit is eaten...
Do we overhype drug-supplement interactions?
Real and hypothetical concerns exist. Dr. Mark Moyad (photo), who is Director of Preventive and Alternative Medicine at the University...
Interaction between aliskiren and fruit juice
Aliskiren (Tekturna) is used to treat high blood pressure. It’s poorly absorbed from the intestines (about 2.5%). Researchers at Helsinki...
Interaction between Shengmai-yin and warfarin
Shengmai-yin (Sheng Mai Yin Pian) is a concentrated Chinese herbal medicine used to “treat a deficiency of vital energy and...
No effect of honey on intestinal and hepatic CYP3A
It’s suggested that honey may stimulate the CYP3A enzyme, and this might alter the metabolism of drugs. Researchers in Germany...
Risk of curcumin-drug interactions
Researchers at Central South University, in Hunan, China studied the effect of curcumin (turmeric) on drug metabolizing enzymes. Their findings...
Do you trust advice from your local supplements sales clerk?
The U.S. Government Accountability Office (GAO) presented to congress the results of a “secret shopper” investigation, which found that in...
Herbals and the risk of an interaction with tamoxifen
Researchers from the Mayo Clinic, in Rochester, Minnesota have listed drugs to avoid when taking tamoxifen (Nolvadex) to treat breast...
The ginseng/warfarin interaction debate
Researchers from Kyung Hee University in Seoul, Republic of Korea studied Asian ginseng (Panax ginseng) and found no interaction with...
Does soy interact with losartan?
Losartan (Cozaar), which is used to treat high blood pressure, is metabolized by liver enzymes CYP2C9 and CYP3A4 to an...